diff --git a/interfaces/innerkits/code_sign_utils/src/code_sign_helper.cpp b/interfaces/innerkits/code_sign_utils/src/code_sign_helper.cpp
index e21bd681cb6f03ed929de7c46573aeab4fee4656..ffc489ecba3490bdd2f05268a1863af0fcf68548 100644
--- a/interfaces/innerkits/code_sign_utils/src/code_sign_helper.cpp
+++ b/interfaces/innerkits/code_sign_utils/src/code_sign_helper.cpp
@@ -80,7 +80,8 @@ void CodeSignHelper::ShowCodeSignInfo(const std::string &path, const struct code
     uint8_t *salt = reinterpret_cast<uint8_t *>(arg.salt_ptr);
     uint8_t rootHash[64] = {0};
     uint8_t *rootHashPtr = rootHash;
-    if (arg.flags & CodeSignBlock::CSB_SIGN_INFO_MERKLE_TREE) {
+    if (arg.flags & CodeSignBlock::CSB_SIGN_INFO_MERKLE_TREE
+        && reinterpret_cast<uint8_t *>(arg.root_hash_ptr) != nullptr) {
         rootHashPtr = reinterpret_cast<uint8_t *>(arg.root_hash_ptr);
     }